如题，今天下载程序时突然提示这个问题，芯片是stm32f107vc ，keil v4。我的装置肯定是好的。问题应该是出在开发器上，谁能帮帮忙，谢谢

Too Many JTAG Devices in Chain
Either too many JTAG devices have been detected in the chain (maximum 64 devices are allowed), or the JTAG communication is corrupted and it behaves as if too many devices are present. Check if the target is powered. Check if the JTAG interface is working properly. Lower the Max Clock frequency in the Target Driver Setup - Debug dialog.  
这个可以参考下呢！虽然是JTAG呢！你可以尝试卸载驱动再安装！

大哥，你也是在官网上找的吧，我已经看过了

回复第 3 楼 于2014-05-07 09:15:35发表:
大哥，你也是在官网上找的吧，我已经看过了
 
 
那你有没有把驱动卸载以后再安装呢？你当时没指定ULINK吗？
 

keil 工程配置，你看能不能查询到芯片信息。换SWD方式试试。